Pulverizing-machine



(No Model.) 2 Sheets-Sheet l. A. D. SEARLS, Sr., A. D. SBARLS, Jr. 88 D. G. SEARLS. PULVBMZING MAGHNB.

No. 898,995. v88158111991'M818. 8, 1889.

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Mfm* S* Q/m Mm? A (No Mudel.) 2 sheets-sheen z. A. D. SEARLS,S1., A. D. SEARLS, J1. 8v D. G. SEARLS.A

PULVERIZING IVIAGIEIIEITJ.l No. 898,995. Y Patented Mar. 5, 1889.

N. PETERS. Pnme-Lmgnpmr. wnhingtm 0. C.

UNITED STATES PATENT OEricE.

ASTIN D. SEARLS, SR., OF SENARD, ASTIN D. SEARLS, JR., OF CIIANNAI'ION, AND DEVVIVI CLINTON SEARLS, OF TROY, ILLINOIS.

PULVRlZlNGfMACHlNE.

SPECIFICATION forming part of Letters Patent No. 398,905, dated March 5, 1889. Application tiled May 28, 1883. Serial No.275,358. (No model.)

To all u'wm it' may concern.: ner that their facing ends nearly meet and Beit known that we, AUSTIN D. SEARLS, their opposite ends project a short distance Sr., residing at Seward, in Kendall county, 'from their respective outer boX. Illinois, AUSTIN D. SEARLS, Jr., residing at D represents rotatingdrum having its in- 55 Channahon, in 1Will county, State ot Illinois, ner head, D, secured to a hub, D2, secured on und DEWITT CLINTON SEARLS, residing at l the inner end ot the shaft S. The opposite Troy, in lill County, State of Illinois, all citihead, D', of said drum is provided with a cenzens of the United States, have invented certral circular feed-opening surrounding the intain new and useful Improvements in Pulverner end of the shaft S, wl i fh opening is pro- 6o 1o izinO-i\Iachines, of which the following' is a vided with an outwardly-extending iiange or specification, reference being had therein to l collar, D4, arranged to nearly meet the inner the accompanying drawings, and the letters side ot' the outer case, (l, inclosing said drum, and iigures of reference thereon, torlning a as near as possible to itorin a close connection part of this specification, in which to prevent esca-pe ot pulverized material be- 6 D i5 Figure l is a side elevation of the pulver* tween thein, as is shown in Fig. 2. The heads izing-inachine as it would appear readT for of said drum are respectivelyv provided with operation. Fig. 2 is a central longitudinal annular chambers in their inner sides, near vertical section of the outer case of the detheir peripheries, for the purpose of securing vice, of the rotating drum and beater-head therein removable lining-plates ci and a', for 7o zo therein, and a side view ot a. portion of its .5 preventing wear of the saidlieads at that place shafts and ot a portion of one of the'bedsills. by the material undertreatrnent. These. plates Fig. 3 is a vertical cross-section of the device, are securel;v held in place by means of bolts taken on line l ot Figs. l and 2, looking' in or screws, and are intended to be of sufiicientthe direction ot the arrow. Fig. i is a side thickness to just till said annular chambers 7 5 plan view of the rotating drum and ot the ro- .j in which they are placed. The inner periphtating beater-head, taken on line 2 of Fig. 2,

eral surface of said drum is provided with relooking in the direction ot` the arrow; and movable beater-plates R, secured in place by Fig. 5 is an enlarged central vertical section means of bolt-s or screws, the faces of which of the outer case ot thev rotating drum and plates maybe formed with vertical offsets and 8o 3o beater-head therein and a side elevation of inclines, as shown in Figs. 3 and i, or maybe the boxes support-ing the shafts of said drinn corrugated or of any suitable forni adapted and beater-head and of the drive-pulleys and to operate on the material to be pulveriz-ed.

liv-wheels on said shafts. The head D6 of said drum, secured to hub D2 This invention relates to certain. improvel on shat't S', is provided with small exit-per- 85 ments in the pulverizing-machine for which forations V in its part innnediatelysurround- Letters Patent of the United States were ing its said hub and between said hub and granted to us, dated JanuariT l0, A. D. lSSS, the lining-plates u oi said head, as shown in No. 3Tt,ll2. i Figs. 2 and i.

Referring to the accompanying' drawings, D representsarotatingbeatenhead toi-ined 9o 4o and the letters and iiguresof reference thereof the hub Il, secured ou the inner end ot on, A represents a pair of parallel bed-sills, shalt S, radial arms y, projecting Afrom said to which are sccurel)v attached the stationary hub, and removable beater-plates d, secured parts ot the machine, which bed-sills are arto the outer ends ot' said arms, as shown in ranged a little distance apart and connected Figs. 2, 3, and i. These arms and beater- 95 by suitable cross-beams to t'orin a strong solid plates maybe connected, il' desired, by means traine. ot the braces d', as shown in Fig. d, l`or inn tual O and O represent staudard-boxcs securely support and strength to the parts.

bolted to the sills A in such position as to be O is a stationaryT case inclosing said drum exactly in line with each other. and beater-head, which case is construct-ed in ico 5o S and S represent a pair of shafts arranged, two parts, hinged together at one side and respectively, in bones O and O in such inansecured together at Nv'the' opposite side from said hinge by means of the latch t, and is secured to said bed-sills by means of its feet Z, securely bolted thereto. Said case closely fits the shafts S S', passing through its sides to prevent the material under treatment from escaping between said shafts and case.

F is a feed-supply pipe or spout extending through the side of the said case and through the central opening in head D of the druln,

1o through which material to be pulverized is.

conducted to the chamber Within said drum surrounding the beater-head D5, arranged therein.

E is an exit-pipe arranged in the side of said case opposite to said feed-pipe, to which exit-pipe is applied a suction air-blower, G.

'P P' are belt-pulleys respectively secured on shafts S and S', to Which pulleys belts may be applied in the ordinary manner to rotate 2o said shafts and their fixed parts in opposite directions.

I and I' are fly-Wheels respectively secured to the outer ends of shafts S S' for governing their speed.

In operation the material to be pulverized is admitted through the feed-pipe F from a supply above, and is rapidly drawn in by means of the suction air-blower, where it comes in contact with a rapid current of air 3o traveling with and caused by the rapid rotation of said beater-head. Th e said current, together with the `arms and beaters of said beaterhead, throws the material radially into an opposite rotating current of air, caused by the 3 5 opposite rotation of the drum, and against material clinging to the inner surface of said drum and the beaters attached thereto', causing rapid disintegration of the material, more from its contact with its particles than with 4o any part of the machine, by utilizing the two oppositely-rotatiug currents of air by means of rotating the drum and beater-head in opposite directions and Without much Wear on any part of the machine. The suction airblower causes a cross-current of air to pass through the machine, which not only assists in feeding in and disintegrating the material, but withdraws the lighter pulverized material as fast as accumulated from the drum 5o through the perforations Vaud from any part of the case, as indicated by the arrows l 2 3 in Fig. 2. The centrifugal force of the drum and beater-head has the tendency to throw the heavier particles of the material outward against the beaters R and the accumulated material clinging to them, Where they are ground to a fine powder, Which gathers more toward the center of the drum, so it can be Withdrawn through the perforations by means of the suction air-blower, as stated. The machine is intended to pulverize stone or ore, but may be used to pulverize any materialv to which it is adapted.

Having thus described our invention, What We claim as new, and desire to secure by Letters Patent, is as follows, to wit:

l. In the pulverizing-machine shown and described, the combination of the drum D,

having its inner head, D6, provided with the perforations V, surrounding its hub and the removable lining-plates a., the notched beaterplates R, arranged on its inner peripheral surface, the head D', having a central feedopening and the removable lining-plates a', the beater-head Di", consisting of the hub H, radial arms y, and beaters d, secured to the outer ends ot' said arms, and the case C, the said beaterhead D"l arranged Within said drum and adapted to rotate in an opposite direction therefrom, substantially as and for the purpose set forth.

2. The combination, udth the case C, consisting of two parts hinged together and having the feed-pipe F, and the exit-pipe E, arranged on the side of said case opposite to said feed-pipe, shaft S, beater-head D5, consisting of the hub H, secured on Vthe inner end of said shaft and having radial arms y, and beater-plates (Z, secured on the outer ends of said arms, shaft S', rotatable drum D, consisting of hub D2, secured on said shaft, head D6,- having the central perforations, V, and the removable lining-plates a, and head D', having the cent-ral feed-opening' surrounded by the outwardly-projecting flange D4, and having the removable lining-plates a', all .arranged to operate substantiallyas and for the purpose set forth.

AUSTIN D. SEARLS, SR. AUSTIN D. SEARLS, JR. v DEVVITT CLINTON SEARLS. lVitnesses:

THos. HJHUTCHINS, K. C. HUTCHINS.- 

